sgrebnov commented on PR #21103:
URL: https://github.com/apache/datafusion/pull/21103#issuecomment-4133542389
> `dt.to_string()`
@nuno-faria - that is a great point, I think we should be using
`dt.to_rfc3339()` by default, which should resolve DuckDB and BigQuery issues
as well so we even don't need custom overrides for them
```
/// Returns an RFC 3339 and ISO 8601 date and time string such as
`1996-12-19T16:39:57-08:00`.
#[cfg(feature = "alloc")]
#[must_use]
pub fn to_rfc3339(&self) -> String {
// For some reason a string with a capacity less than 32 is ca 20%
slower when benchmarking.
let mut result = String::with_capacity(32);
let naive = self.overflowing_naive_local();
let offset = self.offset.fix();
write_rfc3339(&mut result, naive, offset, SecondsFormat::AutoSi,
false)
.expect("writing rfc3339 datetime to string should never fail");
result
}
```
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